Check Valve Cartridge, 2/pk Back Catalog number: CTS-A094 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10285 TFE 3-Way Valve 4 (V4) Price on request CTS-A11376 Mixer Assembly, 100μL Price on request CTS-10600 Check Valve Cartridge, 2/pk Price on request